I love these watching this stuff, it brings back great memories of where I used to work, memories of when you had to not only be able to turn a screwdriver but be a master at flat cable kung fu! lol the cables below the CPU socket werent a problem back in the day in the cases we built them in, and when your assembling a lot of machines every day it helps! I preferred them to be grouped with the floppy connector that way as with some skilful cable folding and routing made them look very neat and tidy, the rule of thumb was the closer to the lower right of the board you could get the floppy and IDE cables the neater the build would be and less restricting of air flow the neatest builds would always have the floppy and the both IDE headers close together so you could cable tie them into a skilfully folded trunk rather than have a jumbled mess and cable tied together, it also helped stopping them rattling loose in transit
I like NecroWare videos for 1)the quality 2)the fact that author is apparently a good person. Many tech youtubers are too crazy or has not enough patience to explain. This one is different. 👍 Btw: I saved one of these boards with the VRM connector as well. It is my favorite ZIDA and most likely oldest Socket 7 I have. Never seen the original VRM - pretty rare. So making one DIY aftermarket is a super idea 👍
I just LOVE re-living the tinkering that I cut my teeth on LOL This is what I grew up doing on my own, learning here and there on the internet when I could find a tool-free number to an ISP that gave away free mins LOL I was only about 13 or 14 around this time, but I learned a lot on my own, with my father teaching me the basics as I grew up..... So seeing a REAL PROFESSIONAL goi0ng through that generation and teaching me the CORRECT knowledge while showing off his AMAZING SKILLS is just such a GREAT WAY to spend my Saturday Evening!!! LOL THANK YOU NECROWARE!!!!!
QDI back in the day were quite innovative. I have some interesting QDI boards, including some socket 423 and socket 478 boards with PC-PCI connectors which can be used to get nice DOS sound going with an appropriate sound card (such as Yamaha 724 or 744). Other manufacturers mostly skipped this feature in the P4 era.
I want to thank you for open sourcing your projects. I'm in the process of creating a bunch of your ps/2 serial adapters. I bought enough parts to make 15, but I'm still prototyping on my bread board. Planning to build a bunch of the Dallas RTC replacements next :)
My sensors clearly enjoyed this and your previous repair(mathrons). Please give s more. Our senses are most excited from videos where you you use 3D graphics adapters without memory, or MoBos without essential parts that reveal the true culprit.
i have enjoy this repairathon seeing that old hardware being brought back to life :) got sum old mainboards my self don't think they as old as the ones you have :D
My first jumperless board was a QDI Titanium Intel 430TX socket 7. I also remember I shorted out the board by being stupid and forgetting to remove the 'reset cmos' jumper as I started up the board. I got a large spark, and one of the system board traces broke. It actually rolled itself back physically from the board. I then bought a new one. I think the 430TX version had the 83MHz bus option in bios. In those days I bought new motherboards all the time. But I remember the QDI Titanium 430TX really stood out for me with it's jumperless design. I was an overclocking enthusiast so it really was a big deal for me.
83 mhz setting was only in unofficial BIOS. I dont have it there, only 75 on QDI Titanium IB. Anandtech mentioning it in review from 1997, that there is unnoffical BIOS with 83 mhz, if I remember correctly, he didnt have it too. just mentioned it.
@@warrax111 Thanks for clarifying. Now, when you mention it, I may recollect something like that. It's been many years though. I must have gone the unofficial bios then. Because I had several 430TX/430VX boards before that QDI, that would let me do 83MHz via jumpers.
i did the same on a PCI 486 board sadly, leaving the cmos reset jumper on, it still posted but i couldn 't save the cmos no more. even with a good battery.
Always nice to have at least a couple in the box that worked without a whole ton of work! I've enjoyed this repairathon quite a bit, thanks for taking us along on the ride.
Thoroughly enjoyed it. Look forward to your future endeavours. Curiously I found a Socket 370 QDI board in my pile and experienced that Speedeasy setup days ago, now I want to overclock it thanks to you.
Pretty sure my Socket 7 Abit board had a jumperless setup too called "Softmenu", think it was an AB PX5 iirc (could be wrong), that also had 75 and 83mhz and my lowly 166 MMX which was one of the early steppings with the unlocked multiplier would run happily at 262.5mhz and was an absolute beast for the time and totally stable, it would even boot and run at 290 but not fully stable. I've really enjoyed your repairathon series it's been very entertaining, thanks for taking us along on the journey. 👍
I pulled a QDI P51430VX-250DM from the e-waste years ago and only got it out the cupboard two days ago, so this video was a happy coincidence. I've been in IT since the mid-90's and likewise I thought that jumperless mainboards came later than this for some reason.
There were quite a few jumperless Super Socket 7 boards, particularly toward the end of their production cycle. The tech company I worked for back then used to sell them. This was well into the slot 1 Pentium III lifecycle. AMD's K6 lineup really kept the platform alive. The last SS7 board I owned (at the time) only had SD RAM slots, AGP, jumperless CPU, ATX form factor complete with USB and a host of other features one wouldn't expect on such a dated socket. Sadly I don't remember the model of the board, I think it was ASUS or Gigabyte.
I remember those QDI boards very well (well obviously not that specific one, mine turned to e-dust ages ago). Back in the day when the Pentium and Pentium MMX were current, a board with a VX chipset was the mother of all motherboards. Unfortunately, it was also like unobtainum: very hard to come by - at least in my experience. But for once I was lucky and got one through a friend. Supposedly it was the fasted Socket 7 board with a VX chipset you could get. And it was fast. I am not sure if it was the fastest, but fast it was.
This has been a wonderful series to watch. I still need to get on of those e/eeprom flashing units. I have a curious AT Socket 7 board here that I have looked over top to bottom, and aside from a few leaky caps that I replaced, visually everything looks fine. But with the analyzer in, I get no response just --. I was hoping maybe the BIOS just got corrupted, but unfortunately in 5 days, the two cats we have had for 18 years passed away, and there isn't the money now for a programmer. Maybe after chirstmas. But keep up the excellent work. I now have two of those techmedia boards that need to be repaired. The battery damage on the second one is so bad, that it discolored the PCB. It's way beyond my ability. I cannot repair traces at all. I don't have the tools or the skills.
I have the same board. And its funny its jumperless if you set the jumper right :-) For me its not Super7 board. It can run nearly any CPU, but it has no AGP and no 100MHz FSB.
I remember building a system with that QDI board paired with a Pentium 200mhz mmx its was a nice system at the time (used to be a great side gig PC building in 97-98) not so much now
I just luckily got this QDI Explorer II speedeasy board, it was in 486 case, I bought, for 486 build. I knew only, there was some Pentium 1 system inside, but expected, as usually unlucky, some shitty board (PCChips VX maybe even FX board). It was nice suprise, because I know about it was one of the first jumperless board and I kinda wanted it. But I wasnt motivated to pay for it as for other socket 7 boards, because I have already enough of them for my tastes, and I have also 2 VX boards, so was demotivated to buy third one. So seems, the board has found me on it's own. Without me, even trying. I have also TX variant (QDI Titanium IB) of it, and it's super cool. Nice to know, about linear votlage regulators, and fan needed, I didnt noticed it. QDI and ABit was first companies, that introduced FSB, multi and voltage in BIOS. Zida and PCChips was next (I have PCChips TX board from 1998, taking also K6-2, it has 2.4v vcore as minimum, and setting vcore in 0.1v steps in BIOS!!! I was pleasantly suprised.) Zida Tomato boards got also overclocking (setting multi and FSB) in BIOS, on slot 1 boards. I have BX and ZX boards of Zida Tomato, and both have setting FSB and vcore in BIOS, but no vcore). I think , these were first companies, that innovated this new jumperless feature, and it's cool. Unfortunately, Asus and Gigabyte holded with jumpers/.swtiches for too long. They were conservative. Gigabyte tried to use it even on first socket A boards, to mess with jumpers and switches, and they were critized for it in reviews, particulary heavy in 2001. Most of manufacturers did have overclocking in BIOS, many in 1mhz steps FSB. So QDI socket 7 boards are cool, this speed easy variants, and TX boards are good. Just search for Anandtech review, of QDI Titanium IB, he prazied it, and also it got one of the highest performance with default Pentium 1 MMX. The better was only one of the Abit board. QDI was sadly less quality manufacturer (we can see it on linear voltage regulators), Aopen , Asus and Abit were better, but this speedeasy feature, made them better. They were always pro-overclocking. The only pity is, they used tantalum capacitors for so long. I've found them even on Slot 1 boards, particulary with Via chipsets, like Advance 9, Advance 10. They were quite average company, for boards, but overclocking features made them good in early times, definately their board were good pick, when budget was a issue.
interesting to see on the QDI motherboard that the slot for the external cache module is missing. Looks like the cache chips are on the baked right on to the board below the simm slots.
QDI P5I430VX-250D or QDI Pentium Explorer II SpeedEasy was my first mainboard back in may 1997. I could not find the bill, but i did find the retail price list from 5th of may 1997. It says 3080 CZK, which is around 172 DM, or 100 USD (according to the exchange rate at the time). I guess its excl. VAT.
Wenn der CPU Lüfter läuft, dann wird das ganze ausreichend gekühlt. Wenn ich etwas machen würde, dann die Versorgung komplett auf Schaltung umbauen, dann könnte das Board theoretisch mit k6-2 466MHz laufen.
Great Video. I have a project of my own. My Gigabyte GA-6VXE7+ just died. No apparent visual damage. When I check the power rails, I see that +5vstb is connected to ground. All the others are not shorted. Any idea which component could be shorted?
This was a great series so thank you! Unfortunately, all of the issues you found and fixed didn’t lead me to fix the problem I am having with my VX Pro socket 7 board by PCChips. The board posts but no video out from any PCI (4) or ISA slot (3) I use. Anyone have any suggestions?
I'm a couple of weeks late to this video, and I've just started watching it and got to the part about the vrm. I'm just wondering why wait until it's finished to open source the project? You could probably get lots of great feedback that will help you find the right solution if you let others in on the development at this time instead of having to find a solution on your own.
Brother! First I must say that I'm learning a lot from your videos and they make me very happy. Thank you! I want to ask you something. I have 3 M919 v3.2 N.1. Works normally! Some PCI video cards are not compatible with it. Voodoo 3, for example, shows a red screen, nothing else. I really don't know why as it should be compatible (I'm running the bus at 33 MHz). N.2. Always gives an E2 error (memory). I have checked and the SIMM is getting 5v. I tried with both 72 and 30 pin modules. The CPU gets either v3.3 or v5 according to jumper settings. I don't know what else to try on that one! I'm rather limited as I only have a multimeter and I'll be getting a logic probe soon. N.3. Doesn't react at all. CPU gets the right voltage, but no error codes, nothing at all. I thought the power transistor 2SC3420 could be the culprit, and in both cases I replaced it with a 2SD2583 (compatible as far as I can tell) and it also gives the right voltage, but it didn't make any difference. I also tried swapping the BIOS from N.1 to N.2, but it didn't help. Something interesting is that N.1 (the one that works) has two 2SD882, instead of a single 2SC3420 like the other boards (I don't think it's related to their problems but may be worth mentioning). Since I have one that works, I could swap parts until I find the defective one. I even could swap the chipset but that's pretty hard and would be a last resource. What would you recommend me to test next with N.2 and N.3? I'll be happy with any advice you could give me. I really enjoy retro-repairs and repairs in general and I thank you again. You are awesome. Merry Christmas and Happy New Year!
Hi! N1. 486 PCI is a very early implementation, it's very common to have issues with later VGA cards. A Voodoo3 is a bad choice for a 486 anyway. 3Dfx needs a fast FPU and for Voodoo3 I'd suggest at least PII or K6-2 N2. Could be memory parity error or wrong memory modules. M919 should be able to use EDO, but for 486 it's better to find FPM modules. If your memory has no parity chips, deactivate "Parity Check" in the BIOS. N3. Hard to tell what's wrong about it. I'd start with voltage (you say it's ok) and then I'd check the clock. This is what I can tell from the hip. Good luck.
@@necro_ware Hey! Thank you for taking the time to answer me. What would you say that gets broken more often when you put a 486 in a wrong orientation? About Voodoo3, yeah I know it's way overkill, I was just trying to see how fast the system could go (the video card worked on a different 486 setup). N2. I tried with several memory modules that are known to work OK. And the motherboard still doesn't find the RAM. As with N3, I don't know what to swap with N1 (the one that works). If you have any ideas of what to do (assuming the clock is right) I'd appreciate them very much. Thanks for your channel again, have a Merry Christmas and I wish you and your loved ones all the best.
dude, got 3 comments d*leted here, lol wamnted to write something cool about this board. I am so sad, lost 10 minutes of time, all 3 comments got auto-d*leted . i dont know what word was messing with youtube . :(
Thanks for a videos, take your time :) i have an offer for you, but I don't know how to reach you out, i have Siemens nixdorf pcd-4ra mainboard with backplane, it has some issues with booting (sometimes boots after wiggling board), and mangled SIMM connectors (someone ripped out modules ignoring latches). If you are interested with donation i can ship it to Germany. I'm from Poland.
I love your videos but can you do something about the quality of your videos? It looks 720p max. And this is a genre where every small detail counts. Sorry to be that guy.
The videos are made in full HD. For better quality I'd need better camera and lights. That would cost me 1-2k€ and a new room. This is unfortunately currently not an option.
![Quando Rondo - Grow Up [Official Music Video]](http://i.ytimg.com/vi/8zFnCg3BO4Q/mqdefault.jpg)
Kudos for sacrificing your hobby to help others. Much respect.
Did the same and now wish i never even tried
Almost sad to see the repairathon end. Good job on all that stuff! Every minute was absolutely enjoyable in this series. 10/10 would watch again
Glad you enjoyed it!
@@necro_ware hell yea! I'd love to see more in the future :3
@@necro_ware I sent you an email. I would compensate you if you could fix my vintage motherboard
I love these watching this stuff, it brings back great memories of where I used to work, memories of when you had to not only be able to turn a screwdriver but be a master at flat cable kung fu! lol the cables below the CPU socket werent a problem back in the day in the cases we built them in, and when your assembling a lot of machines every day it helps! I preferred them to be grouped with the floppy connector that way as with some skilful cable folding and routing made them look very neat and tidy, the rule of thumb was the closer to the lower right of the board you could get the floppy and IDE cables the neater the build would be and less restricting of air flow the neatest builds would always have the floppy and the both IDE headers close together so you could cable tie them into a skilfully folded trunk rather than have a jumbled mess and cable tied together, it also helped stopping them rattling loose in transit
I like NecroWare videos for 1)the quality 2)the fact that author is apparently a good person. Many tech youtubers are too crazy or has not enough patience to explain. This one is different. 👍
Btw: I saved one of these boards with the VRM connector as well. It is my favorite ZIDA and most likely oldest Socket 7 I have. Never seen the original VRM - pretty rare. So making one DIY aftermarket is a super idea 👍
I'm sad this is the last one. I've enjoyed this whole series very much. Thank you.
Thank you for warning us about the temperature in the voltage regulators. I never thought about that.
This is nerdy zen. Watching these gives a genuine satisfaction of seeing the damaged hardware coming back to life.
I just LOVE re-living the tinkering that I cut my teeth on LOL This is what I grew up doing on my own, learning here and there on the internet when I could find a tool-free number to an ISP that gave away free mins LOL I was only about 13 or 14 around this time, but I learned a lot on my own, with my father teaching me the basics as I grew up.....
So seeing a REAL PROFESSIONAL goi0ng through that generation and teaching me the CORRECT knowledge while showing off his AMAZING SKILLS is just such a GREAT WAY to spend my Saturday Evening!!! LOL
THANK YOU NECROWARE!!!!!
Nice wrap up. I'd never seen a jumper-less motherboard from that era either, so I learned something too!
Vielen Dank! Your work here is worth the wait, friend.
Beautiful work off and on RUclips!
Awesome stuff.
Can't wait for more. I love this.
Also, nice of you to give up on your hobby to help people. Much respect!
QDI back in the day were quite innovative. I have some interesting QDI boards, including some socket 423 and socket 478 boards with PC-PCI connectors which can be used to get nice DOS sound going with an appropriate sound card (such as Yamaha 724 or 744). Other manufacturers mostly skipped this feature in the P4 era.
I want to thank you for open sourcing your projects. I'm in the process of creating a bunch of your ps/2 serial adapters. I bought enough parts to make 15, but I'm still prototyping on my bread board. Planning to build a bunch of the Dallas RTC replacements next :)
Thanks for all the vids. Been a journey.
My sensors clearly enjoyed this and your previous repair(mathrons). Please give s more. Our senses are most excited from videos where you you use 3D graphics adapters without memory, or MoBos without essential parts that reveal the true culprit.
Great to see all these boards brought back to life .Thanks for the Video.
Is there an Adapter to use a Modern USB Joystick on a 386 Connect to DOS 15 pin Sound card?
i have enjoy this repairathon seeing that old hardware being brought back to life :) got sum old mainboards my self don't think they as old as the ones you have :D
My first jumperless board was a QDI Titanium Intel 430TX socket 7. I also remember I shorted out the board by being stupid and forgetting to remove the 'reset cmos' jumper as I started up the board. I got a large spark, and one of the system board traces broke. It actually rolled itself back physically from the board. I then bought a new one. I think the 430TX version had the 83MHz bus option in bios. In those days I bought new motherboards all the time. But I remember the QDI Titanium 430TX really stood out for me with it's jumperless design. I was an overclocking enthusiast so it really was a big deal for me.
83 mhz setting was only in unofficial BIOS.
I dont have it there, only 75 on QDI Titanium IB. Anandtech mentioning it in review from 1997, that there is unnoffical BIOS with 83 mhz, if I remember correctly, he didnt have it too. just mentioned it.
@@warrax111 Thanks for clarifying. Now, when you mention it, I may recollect something like that. It's been many years though. I must have gone the unofficial bios then. Because I had several 430TX/430VX boards before that QDI, that would let me do 83MHz via jumpers.
i did the same on a PCI 486 board sadly, leaving the cmos reset jumper on, it still posted but i couldn 't save the cmos no more. even with a good battery.
Thankyou for this series of videos. It was interesting and brought back happy memories.
You're brilliant!
Always nice to have at least a couple in the box that worked without a whole ton of work!
I've enjoyed this repairathon quite a bit, thanks for taking us along on the ride.
Thoroughly enjoyed it. Look forward to your future endeavours. Curiously I found a Socket 370 QDI board in my pile and experienced that Speedeasy setup days ago, now I want to overclock it thanks to you.
Pretty sure my Socket 7 Abit board had a jumperless setup too called "Softmenu", think it was an AB PX5 iirc (could be wrong), that also had 75 and 83mhz and my lowly 166 MMX which was one of the early steppings with the unlocked multiplier would run happily at 262.5mhz and was an absolute beast for the time and totally stable, it would even boot and run at 290 but not fully stable.
I've really enjoyed your repairathon series it's been very entertaining, thanks for taking us along on the journey. 👍
I pulled a QDI P51430VX-250DM from the e-waste years ago and only got it out the cupboard two days ago, so this video was a happy coincidence. I've been in IT since the mid-90's and likewise I thought that jumperless mainboards came later than this for some reason.
I truly enjoyed the repairs.. thanks
amazing video Necroware!!!
Excellent video! Like!
There were quite a few jumperless Super Socket 7 boards, particularly toward the end of their production cycle. The tech company I worked for back then used to sell them. This was well into the slot 1 Pentium III lifecycle. AMD's K6 lineup really kept the platform alive. The last SS7 board I owned (at the time) only had SD RAM slots, AGP, jumperless CPU, ATX form factor complete with USB and a host of other features one wouldn't expect on such a dated socket. Sadly I don't remember the model of the board, I think it was ASUS or Gigabyte.
I remember those QDI boards very well (well obviously not that specific one, mine turned to e-dust ages ago). Back in the day when the Pentium and Pentium MMX were current, a board with a VX chipset was the mother of all motherboards. Unfortunately, it was also like unobtainum: very hard to come by - at least in my experience. But for once I was lucky and got one through a friend. Supposedly it was the fasted Socket 7 board with a VX chipset you could get. And it was fast. I am not sure if it was the fastest, but fast it was.
I definitely enjoyed it! Stuff I handled a lot as a kid when we had a PC store in the 90s to early 2000s!
250 DM! 😂😂😂 Greetings from germany and thanks for all your great work.
This has been a wonderful series to watch. I still need to get on of those e/eeprom flashing units. I have a curious AT Socket 7 board here that I have looked over top to bottom, and aside from a few leaky caps that I replaced, visually everything looks fine. But with the analyzer in, I get no response just --. I was hoping maybe the BIOS just got corrupted, but unfortunately in 5 days, the two cats we have had for 18 years passed away, and there isn't the money now for a programmer. Maybe after chirstmas. But keep up the excellent work. I now have two of those techmedia boards that need to be repaired. The battery damage on the second one is so bad, that it discolored the PCB. It's way beyond my ability. I cannot repair traces at all. I don't have the tools or the skills.
Like others here look forward to another repairathon.
My first motherboard was a jumperless Super Socket 7 board, a Zida TX98-3D back in 1999.
I have the same board. And its funny its jumperless if you set the jumper right :-) For me its not Super7 board. It can run nearly any CPU, but it has no AGP and no 100MHz FSB.
I remember building a system with that QDI board paired with a Pentium 200mhz mmx its was a nice system at the time (used to be a great side gig PC building in 97-98) not so much now
I just luckily got this QDI Explorer II speedeasy board, it was in 486 case, I bought, for 486 build. I knew only, there was some Pentium 1 system inside, but expected, as usually unlucky, some shitty board (PCChips VX maybe even FX board). It was nice suprise, because I know about it was one of the first jumperless board and I kinda wanted it. But I wasnt motivated to pay for it as for other socket 7 boards, because I have already enough of them for my tastes, and I have also 2 VX boards, so was demotivated to buy third one.
So seems, the board has found me on it's own. Without me, even trying.
I have also TX variant (QDI Titanium IB) of it, and it's super cool. Nice to know, about linear votlage regulators, and fan needed, I didnt noticed it.
QDI and ABit was first companies, that introduced FSB, multi and voltage in BIOS. Zida and PCChips was next (I have PCChips TX board from 1998, taking also K6-2, it has 2.4v vcore as minimum, and setting vcore in 0.1v steps in BIOS!!! I was pleasantly suprised.) Zida Tomato boards got also overclocking (setting multi and FSB) in BIOS, on slot 1 boards. I have BX and ZX boards of Zida Tomato, and both have setting FSB and vcore in BIOS, but no vcore).
I think , these were first companies, that innovated this new jumperless feature, and it's cool.
Unfortunately, Asus and Gigabyte holded with jumpers/.swtiches for too long. They were conservative. Gigabyte tried to use it even on first socket A boards, to mess with jumpers and switches, and they were critized for it in reviews, particulary heavy in 2001. Most of manufacturers did have overclocking in BIOS, many in 1mhz steps FSB.
So QDI socket 7 boards are cool, this speed easy variants, and TX boards are good. Just search for Anandtech review, of QDI Titanium IB, he prazied it, and also it got one of the highest performance with default Pentium 1 MMX. The better was only one of the Abit board.
QDI was sadly less quality manufacturer (we can see it on linear voltage regulators), Aopen , Asus and Abit were better, but this speedeasy feature, made them better. They were always pro-overclocking. The only pity is, they used tantalum capacitors for so long. I've found them even on Slot 1 boards, particulary with Via chipsets, like Advance 9, Advance 10. They were quite average company, for boards, but overclocking features made them good in early times, definately their board were good pick, when budget was a issue.
Jumperless is impressive! But as you said, finding a linear voltage regulator on that board is… weird! Thanks for the video!
May be a good topic for a project ;)
@@necro_ware eheh - I knew you'd say that!
interesting to see on the QDI motherboard that the slot for the external cache module is missing. Looks like the cache chips are on the baked right on to the board below the simm slots.
What happens if you remove the damaged Graphics Chip from that board?
There might be versions without it as well, so worth a shot, perhaps?
Man you are so good. I don't even bother with AT computers. I want ATX and coin cell bios battery.
QDI P5I430VX-250D or QDI Pentium Explorer II SpeedEasy was my first mainboard back in may 1997. I could not find the bill, but i did find the retail price list from 5th of may 1997. It says 3080 CZK, which is around 172 DM, or 100 USD (according to the exchange rate at the time). I guess its excl. VAT.
Nice job, I'm kinda jealous.
Wolud you like some boards for next repairathon? I have some that are beyond my skills of repair.
Wenn der CPU Lüfter läuft, dann wird das ganze ausreichend gekühlt. Wenn ich etwas machen würde, dann die Versorgung komplett auf Schaltung umbauen, dann könnte das Board theoretisch mit k6-2 466MHz laufen.
Couldn't you replace those regulators with drop-in switching replacements?
Yes, may be one day
Great Video. I have a project of my own. My Gigabyte GA-6VXE7+ just died. No apparent visual damage. When I check the power rails, I see that +5vstb is connected to ground. All the others are not shorted. Any idea which component could be shorted?
I think it was the Pentium Pro, Socket 8, that sort of ushered in the Jumper-less configuration thing
wouldn't the dm on that motherboard mean something like dimm module or dimm memory
that looks like a dimm slot at the top
May be, yeah.
That is a DIMM slot alright. I have an AOpen AP5-VM motherboard (also 430VX) which has the same memory slot layout. It takes PC66 SDRAM or EDO DIMMs.
id upgrade the heatsinks on the vrms to copper and a bit taller doing so should drop abiut 10 to 15 c off the chips and allow for more comfidence
You Hardcore Overclocker 😁😂👍
😂 not even pretending
This was a great series so thank you! Unfortunately, all of the issues you found and fixed didn’t lead me to fix the problem I am having with my VX Pro socket 7 board by PCChips. The board posts but no video out from any PCI (4) or ISA slot (3) I use. Anyone have any suggestions?
Hard to tell without having that thing in the hands
@@necro_ware do you have any recommended troubleshooting steps for that sort of issue?
I'm a couple of weeks late to this video, and I've just started watching it and got to the part about the vrm. I'm just wondering why wait until it's finished to open source the project? You could probably get lots of great feedback that will help you find the right solution if you let others in on the development at this time instead of having to find a solution on your own.
Brother! First I must say that I'm learning a lot from your videos and they make me very happy. Thank you!
I want to ask you something.
I have 3 M919 v3.2
N.1. Works normally! Some PCI video cards are not compatible with it. Voodoo 3, for example, shows a red screen, nothing else. I really don't know why as it should be compatible (I'm running the bus at 33 MHz).
N.2. Always gives an E2 error (memory). I have checked and the SIMM is getting 5v. I tried with both 72 and 30 pin modules. The CPU gets either v3.3 or v5 according to jumper settings. I don't know what else to try on that one! I'm rather limited as I only have a multimeter and I'll be getting a logic probe soon.
N.3. Doesn't react at all. CPU gets the right voltage, but no error codes, nothing at all.
I thought the power transistor 2SC3420 could be the culprit, and in both cases I replaced it with a 2SD2583 (compatible as far as I can tell) and it also gives the right voltage, but it didn't make any difference.
I also tried swapping the BIOS from N.1 to N.2, but it didn't help.
Something interesting is that N.1 (the one that works) has two 2SD882, instead of a single 2SC3420 like the other boards (I don't think it's related to their problems but may be worth mentioning).
Since I have one that works, I could swap parts until I find the defective one. I even could swap the chipset but that's pretty hard and would be a last resource.
What would you recommend me to test next with N.2 and N.3? I'll be happy with any advice you could give me. I really enjoy retro-repairs and repairs in general and I thank you again. You are awesome.
Merry Christmas and Happy New Year!
Hi!
N1. 486 PCI is a very early implementation, it's very common to have issues with later VGA cards. A Voodoo3 is a bad choice for a 486 anyway. 3Dfx needs a fast FPU and for Voodoo3 I'd suggest at least PII or K6-2
N2. Could be memory parity error or wrong memory modules. M919 should be able to use EDO, but for 486 it's better to find FPM modules. If your memory has no parity chips, deactivate "Parity Check" in the BIOS.
N3. Hard to tell what's wrong about it. I'd start with voltage (you say it's ok) and then I'd check the clock.
This is what I can tell from the hip. Good luck.
@@necro_ware Hey! Thank you for taking the time to answer me.
What would you say that gets broken more often when you put a 486 in a wrong orientation?
About Voodoo3, yeah I know it's way overkill, I was just trying to see how fast the system could go (the video card worked on a different 486 setup).
N2. I tried with several memory modules that are known to work OK. And the motherboard still doesn't find the RAM. As with N3, I don't know what to swap with N1 (the one that works).
If you have any ideas of what to do (assuming the clock is right) I'd appreciate them very much. Thanks for your channel again, have a Merry Christmas and I wish you and your loved ones all the best.
I actually have the TX variant of this board (QDI P5I430TX) which also doesn't have any jumpers. 🤔
That's also very interesting. TX was released one year after VX, but still very interesting to see such feature on a Socket 7 board.
dude, got 3 comments d*leted here, lol wamnted to write something cool about this board. I am so sad, lost 10 minutes of time, all 3 comments got auto-d*leted . i dont know what word was messing with youtube . :(
thats an aeesome board
nice can you repair my PC20-III Board ?
Biege den Spannungswandler um und gib ihm ein besseres Kühlblech, das QDI wird länger leben
are you from the nederland necroware ?
Germany
mod the QDI P5I430VX-250D with a new voltage regulator
Thanks for a videos, take your time :) i have an offer for you, but I don't know how to reach you out, i have Siemens nixdorf pcd-4ra mainboard with backplane, it has some issues with booting (sometimes boots after wiggling board), and mangled SIMM connectors (someone ripped out modules ignoring latches). If you are interested with donation i can ship it to Germany. I'm from Poland.
I love your videos but can you do something about the quality of your videos? It looks 720p max. And this is a genre where every small detail counts. Sorry to be that guy.
The videos are made in full HD. For better quality I'd need better camera and lights. That would cost me 1-2k€ and a new room. This is unfortunately currently not an option.
𝙥𝙧𝙤𝙢𝙤𝙨𝙢 👇